Pneumatic pump.



Patented Dec.,1, 1908.

fmre afar.

Vi M765 sea UNITED emigre PAEENT ()FFICE- CALEB W. MObRE', OF VANCOUVER,WASHINGTON.

To all whom it may concern: ,1

Be it known that I, CALEB W.. Moore, a citizen of the United States,residing at Vancouver, in the county of Clark and State of\vashingtoi'i, haveinvented a new and useful Improvement in PneumaticPumps, of which the following is specification, reference being had tothe accompanying drawings.

My invention relates to the class of machines in which water is pumpedby means of compressed air.

The object of my invention is to provide a pneumatic pump, with aspecially arranged valve mechanism operated by a single float in onecylinder. This and other advantages are attained by the mechanism,construction, combination and arrangement of parts illustrated in theaccompanying drawings which form a part hereof- Figure 1 1s {a view invertlcal sectlon with parts not broken away.

A and B are two chambers.

C is a pipe through whichpneumaticpoweris supplied from a convenientsource of such power.

1 and 2 are perforated globe receivers, secured to the bottom ofchambers A and B respectively and each of them is provided with a footvalve122 as appears in 1.

Discharge pipes 14-14 extend from near the bottoms of chambers A and Bto a common discharge pipe 10. The discharge pipe 14 has a valve chamber3' within which is a valve 3 provided with a slidably mounted valve stem4. Within the valve chamber 23' of the pipe 14 is a similar valve.

Within chamber A is a vertical rod 5 "mountedat its lower end in arecess 5.

Upon this rod 5, buttons 6 and 7 are rigidly secured in convenientplaces near its ends. A float 8 is slidably mounted upon the rod 5between the buttons. The upper end of said rod extends aboveand-withoutthe chamber A and into. a cylinder 9. Rigidly secured to theupper end of the rod 5 and within the cylinder 9, is a piston valve 9.The pi e C opens into the cylinder 9. Extending rom the upper and lowerends of the cylinder 9 is an exhaust pipe 16 which opens into. a commonexhaust pipe 17. I

A cylinder pipe 15 extends from near the upper end of the cylinder 9.into the upper of the chamber A.

A cylinder pipe 18 extends from near the lower end of the cylinder 9into a valve chamber 13 which opens into the upper end PNEUMATIC Patentd Dec. 1, ions.

j of the chamber B. The rod 5 also extends upwardly and out of thecylinder 9 and has a transverse pin 20 secured to its upper end,

which pin is mounted in the slot of a forked 0 arm 19, pivotally mountedin a bearing 19. A spring2-1 is secured at oneend 'to an arm 21 and tothe forked arm 19 at its other end.

mounted at its lower end in "arecess'll'a The said rodhas a floatrigidly secured in a suitable position near its lower end. The upper endof the rod 11 extends into a valve Within chamber B is a vertical rod 115 chamber 13 upon the upper en of the chamg b'er BL Within this valve 0mber, the rod 11 is provided with a check .alve 13'.

In operation the chambers A and B are submerged. Inthe positionshownchamberl A is discharging and chamber B. receiving liquid. It willthus be seen that pneumatic power-being admitted from the pipe G intothe cylinder 9 while valve '9 is in the position shown, the air passesthrough the cylinder into chamber A by means of the connecting pipe 15and forces the liquid to close the foot valve 22 and to dischargethrough the pipe 14. At the same time the foot valve in globe 2 ofchamber B. is open and water I is flowing into the chamber, forcing theair therein through cylinder 13 and 'pipe 18 out through exhaust pipes16 and 17 while its valve in chamber 23 is closed by downward pressure.Thefioat 8 is in the dotted line position 8 atthe beginning and had 9 0then engaged the button 7 and raised the piston valve 9 fi'thepositionshown. As the water recedes the float 7 slides downward until itengages button 6 and by its weight in conjunction with the spring 21,depresses the rod 5, which in turn lowers the piston valve 9 to thelower end of its cylinder 9. When this occurs the pipe 15 will be openedthrough the c linder into communication with exhaust ipes 16-17, thefoot valve 22 opens, admittlng the water and the check valve 3 closes bydownward pressure in the pipe, 14.- At the same time the spring" 21holds the rod 5 in the lower position by means of the arm 19, and thepower pipe delivers the air pressure through the-cylinder 9.,zmd'thepipe 18 and valve chainber 13 into "chamber B- forcin the liqindout,.ofsame as previously escribeddregarding chamber A, f

The function of the rod-:11 in chamber B is to provide against adifference in time or of water when the air pressure is at out to bechanged from chamber A to chamber B. That is to say, when chamber B issufficiently emptied the float 12, by its weight at low water, will deress the rod 11 thereby closing the check va ve l3 and preventing anyfurther pressure of air in chamber B should the rod- 5 in chamber A notrespond at the proper time to move the piston valve 9 and shift thepressure to that chamber. The object of the check valve is thereforeauxiliary, while the piston valve 9 is the single air controlling valveof the entire device.

It is my intention that my pump shall be composed of either one or twochambers and the same mechanism I have herein described may be ada tedto and placed within and upon a sing e chamber with like results asherein described and the elimination of one chamber with the use of myarrangement of valves and inlets or outlets for air or liquid will notbe a new device composed of a less number of parts than mine. There isno other device known to me in which a single controlling pressure valveis arranged to control pneumatic pressure as mine does. It may be usedby fire engines to take Water from rivers, for irrigating land, or hydraulic engines.

Reference is hereby made to my application Ser. No. 422,756 filed on thesame day, for an improvement in air compressors, and in which a valvemechanism somewhat similar to this is shown but wherein the combinationsand arrangements are different.

Having thus described my invention I claim:

1. A pump 'of the character described, comprising chambers A and B eachhaving a valved liquid inlet at bottom, a valved discharge pipe fromnear the bottom extending into a common discharge pipe, pressure controlling mechanism consisting of a vertical rod 5 within chamber A,slidably mounted at its lower end in the bottom of said chamber, the rodhaving rigid buttons thereon near its upper and lower ends and cal-lyinga slidably mounted float bet ween the buttons,

a cylinder 9 above Cllilll'lbifii having a pipe C extending from nearits center to a power source, a pipe 15 extending from near its centerinto the upper end of said chamber, a pipe 18 extending from near thelower end of said cylinder into the upper end of chamber B, exhaustpipes extending from the upper and lower ends of the cylinder, :1 pistonvalve 9 rigidly secured within the cylinder upon and nearthe upper endof the trolling means, an auxiliary l ping mechanism consisting of inslots in its arms a transverse pin of the rod 5 which extends withoutthe cylinder 9, and an actuating spring 21, also auxiliary pressurestopping mechanism, consisting of a vertical rod 11 Within chamber B,slidably mounted at its upper and lower ends and carrying a float 12rigidly secured upon and near the lower end of the rod which extendsinto a valve chamber 13 at the top of the chamber B, and a downwardseating valve 13 within the chamber 13, rigidly secured to the rod 11,substantially as described.

2. In a pump of the character described, having chambers A and B, eachprovided with valved inlets and outlets, the combination of pressurecontrolling mechanism consisting of a vertical rod 5 within chamber A,slidablv mounted at its lower end in the bottom of said chamber, the rodhaving rigid buttons thereon near its upper and lower ends and carryinga slidably mounted float between the buttons, a cylinder 9 above thechamber A, having a pipe C extending from near its center to a powersource, a pipe 15 extending from near its center into the upper end ofsaid chamber, a pipe 18 extending from near the lower end of saidcylinder into the upper end of chamber B, exhaust pipes extending fromthe upper and lower ends of the cylinder, a piston val e 9' rigidlysecured within the cylinder upo l and near the upper end of the rod 5,with auxiliary pressure stopping mechanic n, consisting of a verticalrod 11 within chamber B slidably mounted at its upper and lower ends andupon and near its lower end, a valve chamber 13, into which the rodextends at its uppcrend, and a downward seating valve 1; rigidly securedupon and near the upper end of said rod within valve chamber 13,substantially as described.

3. In a pump of the character described, haviii chambers A and B,provided with valvef inlets and outlets and pressure conpressure stopavertical rod 11 within chamber B slidably mounted at its upper and lowerends, and carrying a iloat l2 rigidly secured upon and near its lowerend, a valve chamber 13 into which the upper end of the rod extends, anda downward seating valve 13 rigidly secured upon and near the upper endof said rod within the valve chamber, substantially as described.

rod 5, valve moving means consisting of a forked arm pivoted at one endand receiving CALEB \V. MOORE. Witnesses V. \V. \Vxoonnn, M. C.VVRieH'r.

